caa a22 4500 378857584 CHVBK 20180305123338.0 cr unu---uuuuu 161128e20030301xx s 000 0 eng 10.1524/zkri.218.3.210.20747 doi (NATIONALLICENCE)gruyter-10.1524/zkri.218.3.210.20747 The pyroxene-spinel polysomatic system [Elektronische Daten] [Boris B. Zvyagin, St. Merlino] Modules 〈P〉 and 〈S〉 which taken separetely constitute the structures of pyroxene and spinel respectively, may give rise, in combination, to a wide polysomatic system ranging between these two minerals as end members. The system is firstly discussed on the basis of complex layers 〈PmSnPm〉, built up by somatic parts of both spinel and pyroxene, from the 〈(P/2)S(P/2)〉 modules, which are the OD layers giving rise to the sapphirine family, to the general 〈Pm/2SnPm/2〉, which includes 〈(P/2)Sn(P/2)〉 (characterizing the structure of calcium aluminium ferrite and SFCA-I compound) and 〈PSP〉 (characterizing the surinamite-type structures). Afterwards the system is discussed on the basis of 〈Pm〉 and 〈Sn〉 layers, with derivation of a new polytypic family closely related to that of sapphirine. Finally the possible stacking sequences of single modules 〈S〉, giving rise to the spinelloid series and the stacking and condensation of single 〈P〉 modules, giving rise to the whole biopyriboles series, are presented and discussed. © 2003 Oldenbourg Wissenschaftsverlag GmbH Crystallography nationallicence Inorganic chemistry nationallicence Organic chemistry nationallicence Zvyagin Boris B. aut Merlino St aut Zeitschrift für Kristallographie - Crystalline Materials De Gruyter Oldenbourg 218/3(2003-03-01), 210-220 2194-4946 218:3<210 2003 218 zkri https://doi.org/10.1524/zkri.218.3.210.20747 text/html Onlinezugriff via DOI 1 research article jats NATIONALLICENCE 856 40 https://doi.org/10.1524/zkri.218.3.210.20747 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Zvyagin Boris B. aut NATIONALLICENCE 700 1- Merlino St aut NATIONALLICENCE 773 0- Zeitschrift für Kristallographie - Crystalline Materials De Gruyter Oldenbourg 218/3(2003-03-01), 210-220 2194-4946 218:3<210 2003 218 zkri CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-gruyter